You can't know if most people of African descent despise Jews. in fact, there are many Jews of African descent.
I don't have the link, but I read a survey recently wherein 88 percent of black respondents said they viewed Jews negatively. As a blonde, blue-eyed Jew of mixed parentage who does not resemble any Jewish sterotype, you'd be surprised how many blacks have expressed virulent anti-semitism to me, thinking I was not Jewish. Even more so than whites. Not very empiric evidence, but quite illuminating.